<style>
             body {
                height: 100%;
                /* The html and body elements cannot have any padding or margin. */
            }

            body {
                margin-top:60px;
                background-color: #eee;
            }
            /* Set the fixed height of the footer here */
            #push,
            #footer {
                height: 60px;
            }
            #footer {
                background-color: white;
            }
            @media (max-width: 767px) {
                #footer {
                    margin-left: -20px;
                    margin-right: -20px;
                    padding-left: 20px;
                    padding-right: 20px;
                }
            }
            .dangnhap {
                margin-top: -20px;
            }
            .form-signin {
                    max-width: 330px;
                    padding: 15px;
                    margin: 0 auto;
                }
            .form-signin .form-signin-heading,
            .form-signin .checkbox {
              margin-bottom: 10px;
            }
            .form-signin .checkbox {
              font-weight: normal;
            }
            .form-signin .form-control {
              position: relative;
              height: auto;
              -webkit-box-sizing: border-box;
                 -moz-box-sizing: border-box;
                      box-sizing: border-box;
              padding: 10px;
              font-size: 16px;
            }
            .form-signin .form-control:focus {
              z-index: 2;
            }
            .form-signin input[type="email"] {
              margin-bottom: -1px;
              border-bottom-right-radius: 0;
              border-bottom-left-radius: 0;
            }
            .form-signin input[type="password"] {
              margin-bottom: 10px;
              border-top-left-radius: 0;
              border-top-right-radius: 0;
            }
            .reserpwd {
                margin-left: 30%;
            }
</style>
<h2 class="dangnhap">Đăng Nhập</h2>
<hr class="featurette-divider">
<form class="form-signin" role="form">
        <input type="email" class="form-control" placeholder="Email address" required autofocus>
        <input type="password" class="form-control" placeholder="Password" required>
        <label class="checkbox">
          <input type="checkbox" value="remember-me"> Remember me
                <a class="reserpwd" href="#">Quên Mật Khẩu</a>
        </label>
        <button class="btn btn-lg btn-primary btn-block" type="submit">Đăng Nhập</button>
      </form>

